Which texts are you studying?
'Stars, hide your fires; let not light see my black and deep desires.'
'O, beware, my lord, of jealousy; it is the green-ey'd monster, which doth mock the meat it feeds on.'
'When he shall die, take him and cut him out in little stars, and he will make the face of heaven so fine that all the world will be in love with night'
'Hell is empty and all the devils are here.'
'Some are born great, some achieve greatness, and others have greatness thrust upon them.'
'I have thought thee fair and sworn thee bright who art black as hell, as dark as night.'